What is relation between service and protocol?

A protocol in general specifies a horizontal dialogue between two computing structures throughout a network, while a service describes a vertical relationship inside a device.

Explanation:

Usually in data networks, units are assigned an IP address so they can participate in sending and receiving messages over the guven network. Usually domain names have been created to convert the numeric IP address into an extra recognizable name.

In everyday terms the term Services describes the ensuing effects of the operation of a protocol without requiring understanding of the certain specifications of the protocol itself.

Relationship between services and protocols:

A protocol in general specifies a horizontal dialogue between two computing structures throughout a network, while a service describes a vertical relationship inside a device